Add two meta formats for PiSP FE: V4L2_META_FMT_RPI_FE_CFG and V4L2_META_FMT_RPI_FE_STATS. The former is used to provide configuration for the FE and the latter is used to read the statistics from the FE. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx> --- .../userspace-api/media/v4l/meta-formats.rst | 1 + .../userspace-api/media/v4l/metafmt-pisp-fe.rst | 39 ++++++++++++++++++++++ drivers/media/v4l2-core/v4l2-ioctl.c | 2 ++ include/uapi/linux/videodev2.h | 2 ++ 4 files changed, 44 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/meta-formats.rst b/Documentation/userspace-api/media/v4l/meta-formats.rst index d82a5a9cbd2f..19493c579a8c 100644 --- a/Documentation/userspace-api/media/v4l/meta-formats.rst +++ b/Documentation/userspace-api/media/v4l/meta-formats.rst @@ -15,6 +15,7 @@ These formats are used for the :ref:`metadata` interface only. metafmt-d4xx metafmt-intel-ipu3 metafmt-pisp-be + metafmt-pisp-fe metafmt-rkisp1 metafmt-uvc metafmt-vsp1-hgo diff --git a/Documentation/userspace-api/media/v4l/metafmt-pisp-fe.rst b/Documentation/userspace-api/media/v4l/metafmt-pisp-fe.rst new file mode 100644 index 000000000000..fddeada83e4a --- /dev/null +++ b/Documentation/userspace-api/media/v4l/metafmt-pisp-fe.rst @@ -0,0 +1,39 @@ +.. SPDX-License-Identifier: GPL-2.0 + +.. _v4l2-meta-fmt-rpi-fe-cfg: + +************************ +V4L2_META_FMT_RPI_FE_CFG +************************ + +Raspberry Pi PiSP Front End configuration format +================================================ + +The Raspberry Pi PiSP Front End image signal processor is configured by +userspace by providing a buffer of configuration parameters to the +`rp1-cfe-fe-config` output video device node using the +:c:type:`v4l2_meta_format` interface. + +The `Raspberry Pi PiSP technical specification +<https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf>`_ +provide detailed description of the Front End configuration and programming +model. + +.. _v4l2-meta-fmt-rpi-fe-stats: + +************************** +V4L2_META_FMT_RPI_FE_STATS +************************** + +Raspberry Pi PiSP Front End statistics format +============================================= + +The Raspberry Pi PiSP Front End image signal processor provides statistics data +by writing to a buffer provided via the `rp1-cfe-fe-stats` capture video device +node using the +:c:type:`v4l2_meta_format` interface. + +The `Raspberry Pi PiSP technical specification +<https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf>`_ +provide detailed description of the Front End configuration and programming +model. diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 0b4f5372c217..1d44303b7e81 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1465,6 +1465,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_META_FMT_GENERIC_CSI2_20: descr = "8b Generic Meta, 20b CSI-2"; break; case V4L2_META_FMT_GENERIC_CSI2_24: descr = "8b Generic Meta, 24b CSI-2"; break; case V4L2_META_FMT_RPI_BE_CFG: descr = "RPi PiSP BE Config format"; break; + case V4L2_META_FMT_RPI_FE_CFG: descr = "RPi PiSP FE Config format"; break; + case V4L2_META_FMT_RPI_FE_STATS: descr = "RPi PiSP FE Statistics format"; break; default: /* Compressed formats */ diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 1eb60baeb3ea..ad1a519eefe5 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -865,6 +865,8 @@ struct v4l2_pix_format { /* Vendor specific - used for RaspberryPi PiSP */ #define V4L2_META_FMT_RPI_BE_CFG v4l2_fourcc('R', 'P', 'B', 'C') /* PiSP BE configuration */ +#define V4L2_META_FMT_RPI_FE_CFG v4l2_fourcc('R', 'P', 'F', 'C') +#define V4L2_META_FMT_RPI_FE_STATS v4l2_fourcc('R', 'P', 'F', 'S') /* priv field value to indicates that subsequent fields are valid. */ #define V4L2_PIX_FMT_PRIV_MAGIC 0xfeedcafe -- 2.34.1